/*
 * Copyright 2023 Red Hat, Inc. and/or its affiliates.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 *
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.drools.drlonyaml.model;

import java.io.IOException;

import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.DeserializationContext;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.deser.std.StdDeserializer;

public class BaseDeserializer extends StdDeserializer<Base> {

    public BaseDeserializer() {
        this(null);
    }

    public BaseDeserializer(Class<?> vc) {
        super(vc);
    }

    @Override
    public Base deserialize(JsonParser jp, DeserializationContext ctxt) throws IOException, JsonProcessingException {
        JsonNode node = jp.getCodec().readTree(jp);
        if (node.get("given") != null) { // TODO maybe enforce XOR checks.
            return jp.getCodec().treeToValue(node, Pattern.class);
        } else if (node.get("exists") != null) {
            return jp.getCodec().treeToValue(node, Exists.class);
        } else if (node.get("all") != null) {
            return jp.getCodec().treeToValue(node, All.class);
        } else if (node.get("not") != null) {
            return jp.getCodec().treeToValue(node, Not.class);
        } else {
            throw new UnsupportedOperationException();
        }
    }
}
